Mechanical movement



(No Model.)

MEHANIAL MOVEMENT.

No. 288,878. Patented May 18.1884.

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GEORGE S. HENSLEY, OF MIDDLETOWN, ASSIGN OR OF ONE-HALF, TO ZAOHARIAHTHOMPSON, OF CLINTON, ARKANSAS.

MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent No. 298,376, dated May 13,1884.

Application tiled vApril 12, 1884. (No model.)

To @ZZ whom, it may concern.: y

Be it known that I, GEORGE S. HnNsLnY, a citizen ot'the United States,residing at Middletownsettlement, in the county ot'V-an Buren and Stateot' Arkansas, have invented certain new and useful Improvements inMechanical Movements, ot' which the following is aspecitication,reference being had therein to the accompanying drawings.

My invention has relation to mechanical movements, and more particularlyto that class wherein a reciprocatingis converted into an acceleratedrotary motion; and the object is to so communicate the reciprocatingmotion to a rotating crank whereby the crank will have the same or agreater throw than the stroke of the reciprocating movement, and thus agreater leverage brought to bear upon said crank; and to these ends thenovelty consists in the construction, arrangement, and combination ofvparts, as will be hereinafter more fully described, and particularlypointed out in the claim.

In the accompanying drawings the same letters ot' reference indicate thesame parts ofthe invention.

Figure l is a side elevation of an engine embodying my invention, andFig. 2 is a plan view ofthe device detached.

A is the bed-plate or base, B the cylinder, C the piston-rod, D theiiy-wheel, and E the eccentric-rod, of an ordinary horizontal engine. A

F is the crank, secured to the shaft H.

To the outer end of the crank H is secured the usual crank-pin, G, andconnected to it are two short pitmen, I I, their other ends beingconnected by pins 't' t' to the levers K K, pivr oted at their centersto the pin L, their inner end being secured to the pitmen M M by pins orbolts n a, while the inner ends of the pitmen M M are secured to av pin,N, which is rigid with the standard O.

P is a connecting-rod, having a U-shaped head, p p', encompassing thelevers K K, so as to form a bearing on either side thereofi'or the -pinL, while the other end of the connectingrod P is secured to thecrosshead R; and it will thus be seen that the reciprocating motion ofthe cross-head is converted into a motion ot' the shaft H, through themedium of the connecting-rod, pitmen, levers, and crank above described.

It will further be observed by those familiar with the principle ofthelazy-tongs herein employed, that for each pair oi' the cross-levers K Kemployed the motion in inches of the cross-head will be doubled withregard to the crank, and, in the illustration shown, while thecross-head is moving one inch the crank is moving two inches. Ir",however, a double pair ofthe levers K K be employed, then for every inchthe cross-head travels the crank will move four inches.

In the drawings I have shown my improved mechanical movement as appliedto a steamengine in place of the ordinary connectingrod, which isdispensed with, and a much larger crank used than would be the case ifthe old construction were employed, whereby a greater leverage isobtained upon the crank with the same pressure upon the piston.

Having thus fully described my invention, what I claim as new anduseful, and desire to secure by Letters Patent of the United States, 1s-

The combination,with the bed-plate, having standard O and shaft H,provided with crank F, of the connecting-rod P, levers K K, and pitmen II and M M, arranged substantially as shown and described.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE S. YPIENSLEY.

vWitnesses:

J. A. HENsLEY, JOHN GooDNrGHT.

